Improvement in shingle-machines



R SMIHL 3Sheets- SheeH.

Shingle-Machines.

Patented Dec. 10, 1872.,

vezzioz JT LM/ W AM PHOTO-LITHMRAFH/C LQMYMJBURNES PROCESS.

3 3heeis--Sheet 2.

B. SMITH. Shingle-Machines.

Patented Dec. 10,

"3 Sheets- -S he t 3..

R.. SiTH.

Shingle-Machines.

Patented. Dec. 10,1872.

Win/6882s AM PHDTO-L/THOBEAPIf/C MMY USEURNEE PROCESS To all whom it mayconcern:

saw. attached the frame F, which carries the block PATENT FF CE RICHARDSMITH, 0F SHERBROOKE, CANADA, ASSIGNOR or ONE-HALF HIS menrro WILLIAMFARWELL, JR, OF SAME PLACE.

' :MeRovEMENT SHINGLE-MACHINES.

Specification forming part of Letters Patent No. 133,730, dated December10, 1872.

Be it known that I, RICHARD SMITH, of Sherbrooke, in the Province ofQuebec, Do.- minion of Canada, have invented a new and ImprovedShingle-Machine; and I do hereby declare the following to be a full andcorrect description of the same, reference being had to the accompanyingdrawing, in which- Figure l'is a side view, in perspective, of themachine; Fig. 2 is a side elevation of the traverse motion; Fig. 3 is aside elevation ofa modified form of traverse motion; Fig. 4 is n atransverse vertical section on line A B of Fig. 2; and Fig. 5 is avertical section of the standard B of the saw-arbor.

The same letters indicate.the sameparts in the several figures.

My improvements relate to the method of giving the traverse motion tothe carriage, to the construction of the top rail, and to theconstruction of the standard B for the saw-arbor, all as' hereinaftermore particularly set forth.

In the drawing, Amarks the bed-piece of l the machine; B, the standardfor the saw-arbor; O O, the uprights which support 1), the top rail,having a drop in it, as shown in Fig. 1, for thepurpose of giving freeaccess to the E is the traversing-carriage, to which is or bolt oftimber. G is the saw, and H the driving-pulley on its arbor. I is a sinall cone- .pulley on the saw-arbor,and K a large conepulley, the shaftof which is geared to the screws or b, of which a is a gain-screw, and br a screw of uniform pitch. 0 is a grooved plate;

11, a tilting or oscillating nut, which engages alternately withthescrews a and b. e is a sliding weight connected with the short armoflever'p. fis a guide for the dog-rod m; f, a dog; 9, an adjustabledog; h h, ratchetwheels on the ends of rollers l l,- i 2', dogs to leverk; l l, feed-rollers; m, dog-rod; a, pin projecting from weight 0, bywhich it is moved on its rod; 0, a lever for raising the upper feedroll;and p, a weight for depressing said roller. q is a wedge secured in therear of plate 0, and operated by crank 1' and rod 8 for the purpose ofthrowing nut d out of contact with screw a, and thereby stopping themotion of the carriage. A bracket, L, secured to the carriage extendsdownward and forms at M a bearing for the nut d, and by'means of this asfollows: Motion having been imparted to the cone K, the screws a b arerotated and the block in the lower end of nut 01 will engage with thethread of screw 1), and thereby the carriage will be moved, and theblock in frame F will be brought up to the saw. When the nut d hasarrived at the end of screw 1) the dog-rod m will have engaged with rodn of weight 0, and carried said weight to the opposite end of itsoscillating frame, which causes the grooved plate 0 tofall both byreason of its connection with lever 7 andby its own unsupported weight.This draws the nut 01 away from screw 1) and throws the block in itsother end into the thread of screw a, when the carriage will be rapidlybrought back, owing to the form of the thread of screw on. As thecarriage is returning dog f engages with pin it and brings the weightback again, which,

back by rod 3 so that the plate 0 falls, and the block in the upper endof nut 61 engages with the screw a, and is carried out of and entirelyfreed from its thread.

A modification of the mechanism for operating the nut d is shown in Fig.3. in which y is a plate, to which the grooved plate 0 of Figs. 1, 2,and 3 is attached. 2 is a plate having diagonal slots, in which pins onplate 3 work. The rod 8 with crank r is attached toplate z, foradjusting it. The plate 3 is connected; with a quadrant, N, having acircular groove by a rod, u. 0 is a lever provided with a weight,

w, on its long arm, and a toothed wheel, 0, on its shaft. The wheel '1;meshes with a toothed rack, w, to move it back and forth. t is a pin onrack to. As the carriage is moved along its track the dog-rod m strikesthe pin t, causing the rack 10 to rotate the wheel v, whereby the lever0 is elevated. This moves the quadrant N, and it, by means of rod n,causes the plate y to fall, whereby the nut d is thrown in contact withthe screw a and the carriage moved back. When the nut has run to the endof screw a the platey is released, and the weight of lever 0 causes itto rise to its former position. The drop or top rail D is made in twoparts, one lower than the other, the object being to allow free accesstothe saw for filing, repairing, &c.

In Fig.5 the construction of the standard B is shown. A mandrel, 0.,having thread ed ends, is secured in the hollow head of said standard bynuts. To a gudgeon, g, on one end of said mandrel, a clevis, c, issecured by set-screws b b, and the saw-arbor d is adjusta-bly held inthis clevis by setscrews e e, which pass throughthe ends of the clevis,and bear against said arbor.

As will be seen, the saw can be set at any distance from the standard Bby adjusting the mandrel in said standard, the threaded ends of saidmandrel and the nuts being for this purpose. By means of the set-screwsb e the clevis is allowed to turn on gudgeon g and the saw-arbor isrendered adjustable in the clevis.

The other parts of the machine, being of the ordinary construction, donot require to be particularly described.

What I claim is- The screws 00 b, in combination with the nut 01,grooved plate a with its operating mechanism, and carriage E,substantially as and for the purpose specified.

The above specification of my said invention signed and witnessed atSherbrooke, Province of Quebec, Canada, this eighteenth day of March, A.D. 1872.

RICHARD SMITH. Witnesses:

STEPHEN EDGELL, Jams MGKINNON.

